801897266 has 4 divisors (see below), whose sum is σ = 1202845902. Its totient is φ = 400948632.

The previous prime is 801897251. The next prime is 801897301. The reversal of 801897266 is 662798108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 653569225 + 148328041 = 25565^2 + 12179^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 801897266.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200474315 + ... + 200474318.

Almost surely, 2^801897266 is an apocalyptic number.

801897266 is a deficient number, since it is larger than the sum of its proper divisors (400948636).

801897266 is a wasteful number, since it uses less digits than its factorization.

801897266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400948635.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 801897266 is about 28317.7906270952. The cubic root of 801897266 is about 929.0510480720.

The spelling of 801897266 in words is "eight hundred one million, eight hundred ninety-seven thousand, two hundred sixty-six".